A body thrown vertically upward with a velocity of 20 ms-1 from the top of the building of height 25 m. (a) How high will the the ball rise (b) How long will it take to before it hit the ground?
take g=10 ms-2
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a)the ball will rise20 m from thee top the building and 45m from the ground
h max.=u^2/2g =400/20=20m
b)t=5 sec
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